Det­ta­glio del pro­get­to ed. 2020

KLIN­KEN­BERG – ST MAR­TI­N’S CHURCH

Desi­gner	Arno Klin­ken­berg
Loca­tion	Wege­ner­str. 15, 68219 Mannheim
Desi­gn Team	Arno Klin­ken­berg Kat­ja Bathon
Anno	2016
Pho­to credits	all Pho­to­gra­phys by Wer­ner Huth­ma­cher Pho­to­gra­phy, Berlin

Foto ester­ni

Descri­zio­ne del progetto

Con­ver­sion of the Mar­tin­skir­che, Man­­n­­heim-Rhei­­nau (south)

Sin­ce the buil­ding main­te­nan­ce costs of the parish were dispro­por­tio­na­te to its inco­me, church pro­per­ties, the old parish hall and the rec­to­ry were sold to finan­ce and imple­ment the reno­va­tion of the Mar­tin­skir­che. The parish was able to main­tain its inde­pen­dent church work by “down­si­zing”.

The essen­tial mea­su­res Installation:

“Intar­sia” — the hou­­se-in-hou­­se concept
A calm, spa­tial­ly com­plex woo­den struc­tu­re which can accom­mo­da­te dif­fe­rent uses and requi­re­men­ts of the parish was pla­ced in the exi­sting church spa­ce. A woo­den struc­tu­re from a sub­­tra­c­­ti­­ve-pro­­ce­s­­sed block of wood with a rudi­men­ta­ry, redu­ced sha­pe was vivid­ly crea­ted for the func­tions that give this instal­la­tion its shape.
Throu­gh the “hou­­se-in-hou­­se con­cept”, spa­ce had been crea­ted for the spa­tial sepa­ra­tion of the sacred and pro­fa­ne areas. The sacral spa­ce was rai­sed and the (pro­fa­ne) spa­ce crea­ted below was desi­gna­ted for the community.
The orien­ta­tion of the enti­re woo­den struc­tu­re is based on the ori­gi­nal orien­ta­tion of the church inte­rior and is deta­ched from the outer walls all around the exi­sting buil­ding. Thus, the church inte­rior can still be per­cei­ved and expe­rien­ced as a con­ti­nuous sacral space.

Inte­rior substance:
Rear wall ope­ning in the choir
In the area of the for­mer apse, the abo­­ve-men­­tio­­ned ope­ning was crea­ted to streng­then the exte­­rior-spa­­ce con­nec­tion of the ground floor or secu­lar com­mu­nal rooms.
Recon­struc­tion of the gal­le­ry, exten­sion of the bank pla­ce­ment area and altar platform
For the instal­la­tion of the woo­den struc­tu­re, the gal­le­ry, bench pla­ce­ment area and altar plat­form were removed.

Mate­ria­li­ty:
The defi­ning mate­rial of the exi­sting buil­ding, such as pla­ster and sto­ne, were jux­ta­po­sed with a woo­den cube made of sil­ver fir for a cosy atmo­sphe­re and spa­tial warmth. The homo­ge­nei­ty of the woo­den con­struc­tion and the bright­ness of the sil­ver fir stand in stark con­tra­st to the dark floor cove­rings of mastic asphalt and quar­tzi­te on the ground floor. The choi­ce of the sil­ver fir for the new prin­ci­ples of the sacred spa­ce addi­tio­nal­ly empha­si­ses the homo­ge­nei­ty and the resul­ting calm and restraint of the power­ful woo­den structure.

Sup­port structure:
The sup­port struc­tu­re of the adju­sted struc­tu­re in the essen­tial com­po­nen­ts is a solid wood con­struc­tion with cross-lami­­na­­ted tim­ber ele­men­ts for the load-bea­­ring wall panels and a board stack cei­ling. The ele­va­tor and the stair­ca­se were also plan­ned enti­re­ly in solid wood.
With the excep­tion of the acou­stic cei­lings on the ground floor, the con­struc­tion has been car­ried out in visi­ble qua­li­ty with con­cea­led con­nec­tion details to match the desi­gn con­cept of a sub­trac­ti­ve pro­ces­sed woo­den struc­tu­re. The reduc­tion of the join­ts in the wall ele­va­tions also fol­lo­ws this objec­ti­ve. In addi­tion to a homo­ge­neous appea­ran­ce, the instal­la­tion effort and the quan­ti­ty of con­nec­ting means were redu­ced. The maxi­mum pos­si­ble size of the wall ele­men­ts could be plan­ned as a func­tion of the entry por­tal of the buil­ding and the maxi­mum load-bea­­ring capa­ci­ty of the exi­sting floor panel.
Sin­ce the woo­den struc­tu­re has rela­ti­ve­ly lar­ge pro­jec­tions on both lon­gi­tu­di­nal sides, the para­pet of the sacral spa­ce has been con­struc­ted as a con­ti­nuous cove­ring and is dimen­sio­ned as a can­ti­le­ver arm with the loads ari­sing the­re from the ceiling.
The requi­red rein­for­ce­ment of the set struc­tu­re is gua­ran­teed by the woo­den wall panels. They were cal­cu­la­ted as sin­gle wall sec­tions clam­ped into the strip foo­ting. As a result, addi­tio­nal con­nec­ting means could be saved in com­pa­ri­son to woo­den wall ele­men­ts com­pa­red to a hin­ged fra­me struc­tu­re made of woo­den wall elements.

Ener­gy concept:
The “hou­se within a hou­se” con­cept opens up the pos­si­bi­li­ty of using the resul­ting buf­fer zone bet­ween the outer wall of the exi­sting church buil­ding and the wall of the adju­sted woo­den construction.
Sin­ce the church inte­rior has to be kept at a con­stant tem­pe­ra­tu­re in win­ter due to the organ, this tem­­pe­­ra­­tu­­re-con­­tro­l­­led spa­ce ser­ves as a “buf­fer” for the spa­ces of the adju­sted woo­den con­struc­tion. As a result, the volu­me to be tem­­pe­­ra­­tu­­re-con­­tro­l­­led is simul­ta­neou­sly redu­ced. The prin­ci­ple is rever­sed in the summer.

Rela­zio­ne illu­stra­ti­va del progetto
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Foto inter­ni

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